Bollywood actor Aamir Khan on Saturday cautioned that his latest production Delhi Belly, starring his actor nephew Imran Khan, is not meant for children under 18 years of age. He said this while promoting the flick in Kolkata. He also added that the item number performed by him in the film is a tribute to the stars, musicians, and the time of 1980s. Produced by Aamir along with wife Kiran Rao, Ronnie Screwvala, Jim Furgele, Delhi Belly is directed by Abhinay Deo and written by Akshat Verma.